Halfway Between 30 and 640

When you ask "What number is halfway between 30 and 640?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=30 and Y=640.

Halfway Between Line

To find the number halfway between 30 and 640, we use the following formula:

(X + Y)/2 = Halfway Between

When we enter 30 and 640 into our formula, we get:

(30 + 640)/2 = 335

Thus, the number halfway between 30 and 640 is 335.

To check that our answer is correct, we subtract 30 from 335 and subtract 335 from 640 and compare the two numbers:

335 - 30 = 305
640 - 335 = 305

As you can see, the halfway number is 305 higher than 30 and 305 lower than 640. Therefore, our halfway between answer of 335 above is correct.

Halfway Between
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